The Regulatory Barriers Clearinghouse (RBC) collects, processes, assembles, and disseminates information on existing barriers that inhibit the production and conservation of affordable housing. RBC is part of the U.S. Department of Housing and Urban Development's (HUD's) Office of Policy Development and Research (PD&R) overall effort to help create cohesive, economically viable, and healthy communities. It was created in response to the and in recognition that as much as a third of the cost of a new home is driven by state and local regulations.